参考文献

Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 29, # 11 p. 1347 - 1351 Khimiya Geterotsiklicheskikh Soedinenii, , # 11 p. 1561 - 1566 Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 29, # 11 p. 1352 - 1357 Khimiya Geterotsiklicheskikh Soedinenii, , # 11 p. 1567 - 1573